Label for Identifying Genuine Article Using Plurality of Nanostructures and Three-Dimensional Lens

ABSTRACT

A label for identifying a genuine article comprising lenticular lens with a plurality of semi-cylindrical convex lens or a microlens with a plurality of semi-circular convex lenses, a focal distance layer, and an image forming layer, wherein the image forming layer includes periodically and regularly arranged nanostructures.

TECHNICAL FIELD

The present invention relates to a label for identifying a genuinearticle and, more particularly, to a label for identifying a genuinearticle using a plurality of nanostructures and a three-dimensionallens.

BACKGROUND ART

A label, which is a piece of paper or other material on which a productname, a trademark, or information about an article are written, isgenerally used to show the origin of an article or the contents,quality, and components of a product. Further, a label can provide thefunction of authentication by showing the specific origin of an article.Recently, illegal imitations of expensive brand-name items arefrequently in circulation, so various methods of discriminating genuinearticles have been developed to prevent the illegal circulation. As away of discriminating genuine articles, labels are manufactured by metallayering or laser engraving so that other people cannot easily forgethem. However, it is possible to imitate those labels without difficultydue to development of the printing or metal layering technology, so thepurpose of the labels cannot be sufficiently accomplished.

Accordingly, new types of label manufacturing technologies, including alabel by printing that changes colors due to heat (see Korean PatentApplication No. 10-2005-0032390) have been developed. Further, atechnology of showing a trademark only at a specific viewing angle bymaking a label using a hidden image that is not shown in a normal state,but is shown in a specific state have been developed. There is a methodof showing a hidden image, which prints an image on a transparent ortranslucent substrate such that specific information cannot be easilyshown using saturation or luminosity and then exposes the substrate tolight of a monitor (changes into a specific state) so the hiddeninformation can be shown (see U.S. Pat. No. 5,984,367). That is, in therelated art, hidden images were shown by using a difference insaturation or luminosity of a background and the image painted with dyesor pigments or by giving a complicated pattern or symbol to thebackground or image to induce an optical illusion.

However, labels printed using dyes or pigments in the related art showjust two-dimensional images and the dyes or pigments may change colorsdue to ultraviolet rays. Therefore, the inventor(s) has developed amethod of showing an image without using a dye or a pigment and a newtype of label for identifying a genuine article by applying the methodto a three-dimensional lens.

DISCLOSURE Technical Problem

The present invention is directed to providing a label for identifying agenuine article using a plurality of nanostructures and athree-dimensional lens, the label being composed of an identificationmark forming part including a three-dimensional lens layer, a focaldistance layer, and an image forming layer, and a coupling member, inwhich the image forming layer of the identification mark forming partincludes an assembly in which a plurality of nanostructures protrudingat heights and intervals of 50 to 200 nanometers is periodically andregularly arranged, and medium having a refractive index different fromthe refractive indexes of the nanostructures and the focal distancelayer is disposed between the nanostructures and the focal distancelayer. Accordingly, it is possible to achieve an image with desiredcolor and shape only by structural designing without using a dye or apigment on one plate without overlap of colors and shapes in anano-scale of 10 micron or less, and one color or whole natural colorscan be implemented in the structural design, so a precise label can bemanufactured. Therefore, the problem of imitating a label can beprevented.

Further, the present invention is directed to providing a label foridentifying a genuine article using a plurality of nanostructures and athree-dimensional lens, the label including: a hidden image forming partthat has nanostructures to show an image only at predetermined viewingangle and predetermined viewing focal distance; and a common imageforming part that has nanostructures to show an image at angles andfocal distances other than the predetermined angle and predeterminedfocal distance for the hidden image forming part. Accordingly, one ormore selected from the group including characters, symbols, and patternsshowing an article are shown in the hidden image forming part, so anidentification mark is shown only at a specific viewing angle, andaccordingly, the label can be used as a decoration with various imagesat common angles.

Technical Solution

One aspect of the present invention provides a label for identifying agenuine article using a plurality of nanostructures and athree-dimensional lens, the label including: an identification markforming part including a three-dimensional lens layer that includes alenticular lens having a plurality of semi-cylindrical convex lensarranged in parallel or a microlens having a plurality of semicircularconvex lenses sequentially arranged, a focal distance layer disposedunder the three-dimensional lens layer, and an image forming layerdisposed under the focal distance layer; and a coupling member forcoupling the identification mark forming part to an article, in whichthe image forming layer includes an assembly in which a plurality ofnanostructures protruding at heights and intervals of 50 to 200nanometers is periodically and regularly arranged, and a medium having arefractive index different from the refractive indexes of thenanostructures and the focal distance layer is disposed between thenanostructures and the focal distance layer.

Preferably, in the identification mark forming part, the height of theplurality of nanostructures may be smaller than the pitch of thenanostructures, and the pitch, height, and shape of the nanostructuresmay be made correspond to the color to be shown by a wavelength that isreflected when natural light is radiated to the nanostructures.

Preferably, the image forming layer of the identification mark formingpart may include: a hidden image forming part that has nanostructures toshow an image only at predetermined viewing angle and predeterminedviewing focal distance; and a common image forming part that hasnanostructures to show an image at angles and focal distances other thanthe predetermined angle and predetermined focal distance for the hiddenimage forming part.

More preferably, the hidden image forming part may includenanostructures formed such that one or more selected from the groupincluding characters, symbols, and patterns showing an article are shownat predetermined viewing angle and predetermined viewing focal distance.

Preferably, the nanostructures may be made of at least one selected fromthe group including PET (Polyethylene terephthalate), PC(Polycarbonate), UV Resin, epoxy resin, and acryl resin, and air mayexist or a vacuum state may be made between the nanostructures and thefocal distance layer.

Preferably, the identification mark forming part may further include aflat coating layer provided to make the top of the three-dimensionallens layer flat.

Preferably, the identification mark forming part may further include alight block layer under the image forming layer.

Preferably, the three-dimensional lens layer of the identification markforming part may include a first lenticular lens having a plurality ofsemi-cylindrical convex lenses arranged in parallel and a secondlenticular lens having a curved surface facing the first lenticularlens, and the center lines of the semi-cylindrical convex lenses of thefirst lenticular lens and the second lenticular lens may cross eachother.

Preferably, the coupling member may include an adhesive or a connectionring and the label for identifying a genuine article may be used tocheck whether an article is a genuine article by being attached to oneor more selected from the group including a watch, a hat, a bag, a pieceof clothes, a bottle, and an electronic device.

Preferably, the coupling member may have an adhesive layer, theidentification mark forming part may have a separation film thereon, andthe label for identifying a genuine article may be transcribed on anarticle.

Advantageous Effects

According to a three-dimensional lens sheet including a plurality ofnanostructures and showing a hidden image, it is composed of anidentification mark forming part including a three-dimensional lenslayer, a focal distance layer, and an image forming layer, and acoupling member, in which the image forming layer of the identificationmark forming part includes an assembly in which a plurality ofnanostructures protruding at heights and intervals of 50 to 200nanometers is periodically and regularly arranged, and medium having arefractive index different from the refractive indexes of thenanostructures and the focal distance layer is disposed between thenanostructures and the focal distance layer. Accordingly, it is possibleto achieve an image with desired color and shape only by structuraldesigning without using a dye or a pigment on one plate without overlapof colors and shapes in a nano-scale of 10 micron or less, and one coloror whole natural colors can be implemented in the structural design, soa precise label can be manufactured. Therefore, the problem of imitatinga label can be prevented.

Further, according to the present invention, it includes: a hidden imageforming part that has nanostructures to show an image only atpredetermined viewing angle and predetermined viewing focal distance;and a common image forming part that has nanostructures to show an imageat angles and focal distances other than the predetermined angle andpredetermined focal distance for the hidden image forming part.Accordingly, one or more selected from the group including characters,symbols, and patterns showing an article are shown in the hidden imageforming part, so an identification mark is shown only at a specificviewing angle, and accordingly, the label can be used as a decorationwith various images at common angles.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a view showing a label for identifying a genuine article usinga plurality of nanostructures and a three-dimensional lens according toan embodiment of the present invention.

FIG. 2 is a view showing an image forming layer in the label foridentifying a genuine article using a plurality of nanostructures and athree-dimensional lens according to an embodiment of the presentinvention.

FIG. 3 is a view showing a detailed configuration of an image forminglayer in a label for identifying a genuine article using a plurality ofnanostructures and a three-dimensional lens according to anotherembodiment of the present invention.

FIG. 4 is a view showing a label for identifying a genuine article usinga plurality of nanostructures and a three-dimensional lens according toanother embodiment of the present invention.

FIG. 5 is a view showing a label for identifying a genuine article usinga plurality of nanostructures and a three-dimensional lens according toanother embodiment of the present invention.

FIGS. 6 to 8 are views showing a label for identifying a genuine articleusing a plurality of nanostructures and a three-dimensional lensaccording to an embodiment of the present invention which is attached toan article in use.

DETAILED DESCRIPTION

Embodiments of the present invention will be described in detail withreference to the accompanying drawings for those skilled in the art toeasily achieve the present invention. However, in describing the presentinvention, well-known functions or constructions will not be describedin detail since they may unnecessarily obscure the understanding of thepresent invention. Further, the components having similar functions andactions are indicated by the same or similar reference numeralsthroughout the drawings.

Throughout the specification, it should be understood that when oneelement is referred to as being “connected to” another element, it maybe “connected directly to” another element or “connected indirectly to’another element, with the other element therebetween. Further, unlessexplicitly described otherwise, “comprising” any components will beunderstood to imply the inclusion of other components rather than theexclusion of any other components.

FIG. 1 is a view showing a label for identifying a genuine article usinga plurality of nanostructures and a three-dimensional lens according toan embodiment of the present invention. As shown in FIG. 1, a label foridentifying a genuine article using a plurality of nanostructures and athree-dimensional lens according to an embodiment of the presentinvention may include: an identification mark forming part 100 includinga three-dimensional lens layer 110, a focal distance layer 120, and animage forming layer 130; and a coupling member 200 for coupling theidentification mark forming part 100 to an article.

The identification mark forming part 100 forms an identifying mark of anarticle where the label for identifying a genuine article is attachedand can construct a three-dimensional image using a three-dimensionallens or a plurality of nanostructures in the present invention.According to the structure of the identification mark forming part 100proposed in the present invention, colors and patterns can be shown onone plate in a nano-scale of 10 micron or less without overlapping, andone color or whole natural colors can be implemented in the structuraldesign, so a precise label can be manufactured. Accordingly, the labelproposed in the present invention cannot be easily forged technicallyand economically, so it can sufficiently provide the function ofauthentication.

The three-dimensional lens is a lenticular lens or microlens, whichreproduces a 2D image into 3D image using an optical illusion bybinocular disparity. Methods of showing a three-dimensional image usinga three-dimensional lens in the related art have used three-dimensionaleffect and various conversion effects of an image by applying alenticular lens or a microlens to an image made by a dye or a pigment.That is, the most important factor of the three-dimensional effect isbinocular disparity due to the distance of about 65 mm between two eyesof people, so when a three-dimensional lens is used, some images areblocked and light selectively travels forward, and accordingly, aneffect of 3D image can be obtained from a 2D image. According to athree-dimensional lens, an image is shown through a printed layer of adye or a pigment under a lens layer, but this method of showing an imageusing a dye or a pigment has a problem in that the dye or the pigment ischanged in color by ultraviolet rays. Further, when a three-dimensionalshape is obtained through a three-dimensional lens on a printed surface,dot patterns overlap each other, so it is difficult to obtain a desiredimage.

On the other hand, butterflies and the feathers of birds show specificcolors even without a pigment, because light is diffracted, interfered,and dispersed by specific structures. That is, when light is radiated tofine wrinkles or regularly arranged structures, light with specificwavelengths is only reflected and the colors of the wavelengths areshown. The inventor(s) has developed a method of showing athree-dimensional color image that is precise and not deformed bydesigning a structure without using a dye or a pigment in considerationof such structure colors and intends to the method to a label foridentifying a genuine article. The detailed configuration of theidentification mark forming part is described hereafter.

The three-dimensional lens layer 110 may include a lenticular lens 111having a plurality of semi-cylindrical convex lenses arranged inparallel or a microlens 112 having a plurality of semicircular convexrange sequentially arranged. The convex lenses may have a predeterminedrefractive index and a non-spherical cross-section. According to anembodiment of the present invention, unlike common three-dimensionallens layers, the cross-section may be formed in a non-spherical shapehaving a very high angle of view. According to this configuration, whena flat coating layer 140 having a low refractive index is applied on thesurface of a lens, two refractive indexes are provided, so the problemwith a narrow angle of image can be removed. Further, the non-sphericalcross-section allows for adjustment of a focal distance. When the powerof a lens increases, the focal distance decreases, and when the powerdecreases, the focal distance increases, so it is required to increasethe power in order to make a lens thin.

The focal distance layer 120 is disposed under the three-dimensionallens layer 110 and can fit a focal distance corresponding to a radius ofcurvature. That is, it is possible to make the focal distance layer 120having an appropriate thickness in accordance with the curvature andthickness of the three-dimensional lens layer 110, the size of an image,and the size and position of a three-dimensional color image to beshown.

The image forming layer 130 is disposed under the focal distance layer120 and includes an assembly where a plurality of nanostructures 131,which protruding at heights and intervals of 50 to 200 nanometers, isperiodically and regularly arranged, in which another medium 132 havinga refractive index different from the nanostructures 131 and the focaldistance layer 120 may be disposed between the nanostructures 131 andthe focal distance layer 120.

Preferably, the height of the plurality of nanostructures 131 may besmaller than the pitch of the nanostructures 131. More preferably, theheight of the nanostructures 131 may be 30 to 100 nm and the pitch ofthe nanostructures 131 may be 150 to 200 nm.

The pitch, height, and shape of the nanostructures 131 may be made tocorrespond to the color to be shown by a wavelength that is reflectedwhen natural light is radiated to the nanostructures 131. That is, thenanostructures 131 have a predetermined pitch and a predeterminedheight, and the pitch and height may depend on a pattern or colorreference according to a light reflection wavelength.

FIG. 2 is a view showing an image forming layer in the label foridentifying a genuine article using a plurality of nanostructures and athree-dimensional lens according to an embodiment of the presentinvention. As shown in FIG. 2, light is refracted or reflected by thenanostructures 131 and a specific pattern may be recognized by thereflected light. Further, some or all of the plurality of nanostructures131 may be formed by stacking a plurality of nanostructures 131, and thestacked structures may be made of materials having different refractiveindexes, respectively, and, as shown in FIG. 2, may be stackedalternately within a predetermined width. The shape of thenanostructures 131 of FIG. 2 is just an embodiment and the presentinvention is not limited thereto, and various nano-scale structures maybe formed and an image according to a light reflection wavelength may bemade.

In the label for identifying a genuine article using a plurality ofnanostructures and a three-dimensional lens according to an embodimentof the present invention, the nanostructures 131 may be made of one ormore selected from the group including PET (Polyethylene terephthalate),PC (Polycarbonate), UV Resin, epoxy resin, and acryl resin. Further, airmay exist or a vacuum state may be made between the nanostructures 131and the focal distance layer 120. When air exists or a vacuum state ismade, there is a need for an external coating portion (not shown) aroundthe edge of the three-dimensional lens sheet.

The present invention employs a way of showing an image by designing thestructure of the nanostructures 131 and the three-dimensional lens layer110 and the focal distance layer 120 are combined and formed over theimage forming layer 130, so the nanostructures 131 are formed in a labeland accordingly, the shape thereof can be maintained and protected froman external environment even without a specific protective layer. Thatis, since the present invention employs the structure in which thethree-dimensional layer 110 is disposed over the nanostructures 131, itis possible to very stably and effectively make a precisethree-dimensional image.

FIG. 3 is a view showing a detailed configuration of an image forminglayer in a label for identifying a genuine article using a plurality ofnanostructures and a three-dimensional lens according to anotherembodiment of the present invention. As shown in FIG. 3, according toanother embodiment of the present invention, the image forming layer 130is divided into a hidden image forming part 133 and a common imageforming part 134, so an identification marks are shown only at specificviewing angle and viewing focal distance and then the label can be usedas a decoration with various images at common viewing angles. In detail,the image forming layer 130 may include the hidden image forming part133 that has nanostructures to show an image only at predeterminedviewing angle and predetermined viewing focal distance and a commonimage forming part 134 that has nanostructures 131 to show an image atangles and focal distances other than the predetermined angle andpredetermined focal distance for the hidden image forming part 133.

Preferably, the hidden image forming part 133 may include nanostructures131 formed such that one or more selected from the group includingcharacters, symbols, and patterns showing an article are shown atpredetermined viewing angle and predetermined viewing focal distance.That is, as shown in FIG. 3, various images that can provide aestheticfeel are made at common viewing angle and an identification mark (ahidden image) is shown only when a person looks at a label at a veryclose distance, so authentication function and aesthetic function canboth be achieved.

FIG. 4 is a view showing a label for identifying a genuine article usinga plurality of nanostructures and a three-dimensional lens according toanother embodiment of the present invention. As shown in FIG. 4, anidentification mark forming part 100 of the label for identifying agenuine article according to an embodiment of the present invention mayfurther include a flat coating layer 140 provided to make the top of thethree-dimensional lens layer 110 flat. The three-dimensional lens layer110, as described above, is provided to achieve a two-dimensional imageeffect using binocular disparity and makes bending on the lenticularlens 111 or the microlens 112. Accordingly, the lens surface is easilycontaminated and the friction is frequently generated only at the convexportion, so the degree of wear is different at portions of the lens anda curvature different from the original curvature is made, andaccordingly, it may not sufficiently function as a three-dimensionallens. According to another embodiment of the present invention, the flatcoating layer 140 is further provided on the top forming a curvedsurface of the three-dimensional lens layer 110, thereby solving theproblem. It is preferable that the flat coating layer 140 is made oftransparent resin having a refractive index different from that of thethree-dimensional lens layer 110 to maintain refraction due to thebending of the three-dimensional lens layer 110 and keep the surfaceflat.

Further, an identification mark forming part 100 of the label foridentifying a genuine article according to another embodiment of thepresent invention may further include a light block layer 150 under theimage forming layer 130. As described above with reference to FIG. 2,since an image is made by a color shown by light reflecting from thenanostructures 131, it is possible to efficiently use the reflectioneffect of light by further disposing the light block layer 150 at thelower portion.

FIG. 5 is a view showing a label for identifying a genuine article usinga plurality of nanostructures and a three-dimensional lens according toanother embodiment of the present invention. As shown in FIG. 5, thethree-dimensional lens layer 110 of the identification mark forming part100 includes a first lenticular lens 111 a having a plurality ofsemi-cylindrical convex lenses arranged in parallel and a secondlenticular lens 111 b having a curved surface facing the firstlenticular lens 111 a, in which the center lines of the semi-cylindricalconvex lenses of the first lenticular lens 111 a and the secondlenticular lens 111 b may cross each other.

The common semi-cylindrical lenticular lens 111 has a three-dimensionaleffect that is shown in a vertical pattern-binocular disparity type, butthe radial microlens 112 can ensure a four directional pattern-binoculardisparity. In another embodiment of the present invention, it ispossible to achieve a three-dimensional effect in various directions byarranging the center lines of two lenticular lenses 111 a and 111 bfacing each other such that their center lines cross each other. Thatis, it is possible to make the top of a lens flat without a specificflat coating layer 140 and achieve the effect of a microlens 112 too.The center lines may cross each other at 45, 60, or 90 degrees, but thepresent invention is not limited thereto and the angle may be changed inaccordance with embodiments.

The coupling member 200 may couple the identification mark forming part100 to an article. Depending on embodiments, the coupling member mayinclude an adhesive 210 or a connection ring 220 and the label foridentifying a genuine article may be used to check whether an article isa genuine article by being attached to one or more selected from thegroup including a watch, a hat, a bag, a piece of clothes, a bottle, andan electronic device.

FIGS. 6 to 8 are views showing a label for identifying a genuine articleusing a plurality of nanostructures and a three-dimensional lensaccording to an embodiment of the present invention which is attached toan article in use. As shown in FIG. 6, the label for identifying agenuine article proposed in the present invention may be attached to abottom adhesive 210 in a watch 10 and show a specific pattern, and mayshow an identification mark of the article when a person looks at it ata close distance. Further, as shown in FIG. 7, the label may be sawn toa side of a hat 20, and as shown in FIG. 8, it may be coupled to a bag30 by a connection ring 220 as a kind of decoration.

According to another embodiment of the present invention, the couplingmember 200 may has an adhesive layer, the identification mark formingpart 100 may have a separation film thereon, and the label foridentifying a genuine article may be transcribed on an article.

The adhesive layer may be formed under the image forming layer 130 orthe light block layer 150 of the identification mark forming part 100and may fix the label for identifying a genuine article to an article.Depending on embodiments, well-known various heat-sensitive orpressure-sensitive resins may be used, and in detail, polyacryl-basedresin, polystyrene-based resin, polyamide-based resin, chlorinatedpolyolefin-based resin, chlorinated ethylene-acetic vinyl copolymerresin, or rubber-based resin may be used.

The separation film is separated after being attached to an article andmay be disposed on the top of the identification mark forming part 100.Depending on embodiments, the separation film may be achieved using aresin film of polypropylene-based resin, polyethylene-based resin,polyamide-based resin, polyester-based resin, polyacryl-based resin, orpolyvinyl chloride-based resin, as a main material, a metal film such asan aluminum film or a copper film, a cellulose-based sheet such as aglycine paper, a coat paper, or a cellophane, or a composite sheet oftwo or more of them as a base material, and by forming a separationlayer through separation treatment on a side of the base material. Theseparation treatment for forming the separation layer is notspecifically limited, and for example, various printing methods or coatmethods using epoxy-based, epoxy-melamine-based, amino-alkyd-based,acryl-based, melamine-based, silicon-based, fluorine-based,cellulose-based, urea resin-based, polyolefin-based, or paraffin-basedmaterial, or composite separation materials including two or more ofthem may be used.

According to the label for identifying a genuine article proposed in thepresent invention, a transcribing material may be formed by furtherincluding the adhesive layer and the separation film and can be appliedto the surface of a desired article.

In the label for identifying a genuine article according to anembodiment of the present invention, the adhesive layer is put close toan article, heat and pressure is applied to the separation film by atranscriber such as a thermal resistance rubber elastic body at thetemperature of about 80° to 260° and the pressure of 50 kg/m² to 200kg/m², and then the separation film is separated after cooling.Accordingly, separation occurs at the interface between the top of theidentification mark forming part 100 and the separation film and thelabel for identifying a genuine article can be transcribed on thesurface of the article. This is just an embodiment and the label foridentifying a genuine article may be transcribed to an article invarious ways such as injection molding.

The present invention described above may be changed and modified invarious ways by those skilled in the art and the scope of the presentinvention should be determined by the following claims.

What is claimed is:
 1. A label for identifying a genuine article using aplurality of nanostructures and a lens for three-dimensional images, thelabel comprising: an identification mark forming part including: a lenslayer for three-dimensional images that includes a lenticular lenshaving a plurality of semi-cylindrical convex lens arranged in parallelor a microlens having a plurality of semicircular convex lensessequentially arranged, a focal distance layer disposed under the lenslayer for three-dimensional images, and an image forming layer disposedunder the focal distance layer; and a coupling member for coupling theidentification mark forming part to an article, wherein the imageforming layer includes an assembly in which a plurality ofnanostructures protruding at heights and intervals of 50 to 200nanometers is periodically and regularly arranged, wherein a mediumhaving a refractive index different from the refractive indexes of thenanostructures and the focal distance layer is disposed between thenanostructures and the focal distance layer, wherein the lens layer forthree-dimensional images of the identification mark forming partincludes a first lenticular lens having a plurality of semi-cylindricalconvex lenses arranged in parallel and a second lenticular lens having acurved surface facing a curved surface of the first lenticular lens, thecenter lines of the semi-cylindrical convex lenses of the firstlenticular lens and the second lenticular lens cross each other, andwherein the image forming layer of the identification mark forming partincludes: a hidden image forming part that has nanostructures to show animage only at a predetermined viewing angle and a predetermined firstviewing focal distance; and a common image forming part that hasnanostructures to show an image at angles and focal distances othergreater than the predetermined angle and predetermined first focaldistance for the hidden image forming part, wherein the hidden imageindicates that the article is genuine at the predetermined viewing angleand the predetermined viewing focal distance both a common image and ahidden image are visible and wherein the hidden image comprises anidentification mark.
 2. The label of claim 1, wherein in theidentification mark forming part, the height of the plurality ofnanostructures is smaller than the pitch of the nanostructures, and thepitch, height, and shape of the nanostructures are made to correspond tothe color to be shown by a wavelength that is reflected when naturallight is radiated to the nanostructures.
 3. The label of claim 1,wherein the hidden image forming part includes nanostructures formedsuch that one or more selected from the group including characters,symbols, and patterns showing an article are shown at predeterminedviewing angle and predetermined viewing focal distance.
 4. The label ofclaim 1, wherein the nanostructures are made of one or more selectedfrom the group including PET (Polyethylene terephthalate), PC(Polycarbonate), UV Resin, epoxy resin, and acryl resin, and air existsor a vacuum state is made between the nanostructures and the focaldistance layer.
 5. The label of claim 1, wherein the identification markforming part further includes a flat coating layer provided to make thetop of the lens layer for three-dimensional images flat.
 6. The label ofclaim 1, wherein the identification mark forming part further includes alight block layer under the image forming layer.
 7. The label of claim1, wherein the coupling member includes an adhesive or a connectionring, and the label for identifying a genuine article is used to checkwhether an article is a genuine article by being attached to one or moreselected from the group including a watch, a hat, a bag, a piece ofclothes, a bottle, and an electronic device.
 8. The label of claim 1,wherein the coupling member has an adhesive layer, the identificationmark forming part has a separation film thereon, and the label foridentifying a genuine article is transcribed on the surface of anarticle.